That app was built using Eclipse and Android SDK. A few years back I wanted to go down the path of code-once, deploy to many platforms. At that time I started working with DevExtreme (which basically uses Cordova) to build apps.

This updated "Investing / Trading Wisdom" app was another project that I used to learn some additional mobile technologies: IndexDB and PouchDB. When the app first starts up it takes the quotations from JSON and loads these into an IndexDB using PouchDB as the interface.